Update app.py

app.py

@@ -38,7 +38,7 @@ with gr.Blocks(theme="Hev832/niceandsimple") as ui:
     chatbot = gr.Chatbot(label="OpenAI Chatbot")
     with gr.Row():
         msg = gr.Textbox(label="Enter your message here:")
-        model gr.Dropdown(["gpt-4o-mini", "gpt-3.5-turbo", " gpt-4o"], label="your gpt model")
+        model = gr.Dropdown(["gpt-4o-mini", "gpt-3.5-turbo", " gpt-4o"], label="your gpt model")
     submit_btn = gr.Button("Submit")